[Bug libstdc++/64638] Build failure with recent futex changes in libstdc++, likely all non-futex targets

[hp at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64638

--- Comment #1 from Hans-Peter Nilsson <hp at gcc dot gnu.org> ---
Forgot to say the obvious: committer in CC is singled out only because of the
context of the error message.